In this work, I investigate the quantum dynamics of a spin-1/2 particle propagating in the spacetime of a static, spherically symmetric Einstein-Gauss-Bonnet (EGB) black hole within the framework of relativistic quantum mechanics. Starting from the Dirac equation in curved spacetime-formulated using the tetrad formalism and the associated spin connection we construct the corresponding Dirac Hamiltonian in EGB geometry. Next, I employ Heisenberg's equations of motion to derive explicit operator expressions for the particle's velocity and force, providing a fully quantum description of fermionic motion in a higher-curvature gravitational background. It is observed that the spacetime geometry modifies the Dirac dynamics through the EGB metric function, leading to corrections in the velocity and force operators that depend explicitly on the Gauss-Bonnet coupling parameter, ξ. In the weak-field limit, the expectation values of these operators satisfy Ehrenfest's theorem, demonstrating that the corresponding classical Einstein-Gauss-Bonnet dynamics emerges naturally as the semiclassical limit of the underlying quantum theory. In particular, the effective radial force includes higher-curvature contributions that become increasingly significant in the strong-gravity regime, while continuously reducing to the Schwarzschild result as the Gauss-Bonnet parameter approaches zero. These results establish a direct connection between relativistic quantum dynamics and modified gravity, providing an operator-based framework for investigating fermionic motion in Einstein-Gauss-Bonnet spacetimes.